Statement-I : During embryonic development of humans, the inner cell mass differentiates into ectoderm, endoderm and mesoderm and these layers give rise to all tissues and organs in adults.
Statement-II The inner cell mass contains certain cells called stem cells, which have the potency to give rise to all the tissues and organs.

Options

A. Both I and II statements are correct
B. Both I and II statements are wrong
C. Statement-I correct but II is wrong
D. Statement-I wrong but II is correct

Answer

**Step-by-Step Solution:**

1. **Understanding Statement I**:
- Statement I claims that during human embryonic development, the inner cell mass differentiates into three germ layers: ectoderm, endoderm, and mesoderm. These layers are essential as they give rise to all tissues and organs in the adult human body.
- **Hint**: Recall the three primary germ layers and their roles in organogenesis.

2. **Understanding Statement II**:
- Statement II states that the inner cell mass contains stem cells, which have the ability (potency) to differentiate into all types of tissues and organs.
- **Hint**: Consider the definition of stem cells and their significance in development.

3. **Analyzing Statement I**:
- The inner cell mass indeed differentiates into the ectoderm, endoderm, and mesoderm during the early stages of embryonic development. Each of these layers contributes to the formation of various organs and systems in the body.
- **Hint**: Think about examples of what each germ layer develops into (e.g., ectoderm forms skin and nervous system).

4. **Analyzing Statement II**:
- The inner cell mass is composed of pluripotent stem cells, which means they can give rise to any cell type in the body. This is a fundamental characteristic of stem cells during early embryonic development.
- **Hint**: Recall the concept of pluripotency and its implications for developmental biology.

5. **Conclusion**:
- Both statements are correct. Statement I accurately describes the differentiation of the inner cell mass into the three germ layers, and Statement II correctly identifies the presence of stem cells within the inner cell mass that have the potential to develop into various tissues and organs.
- **Final Answer**: Therefore, the correct option is that both Statement I and Statement II are correct.